Hi @Thefloristwrapshop 

Try these Zap steps:

1. Trigger: Shopify - New Paid Order
2. Action: Looping - Create Loop from Line Items
   1. Used to handle line items in orders
   2. Map data points about the line items from step 1
3. Action: Excel - Find Row
   1. Map data out from Step 2
4. Action: Formatter >. Numbers > Perform Math Operation
   1. Use the existing Inventory for the Row found in Step 2
   2. Use the line item qty from Step 2
5. Action: Excel - Update Row
   1. Map the Row ID from Step 2
   2. Map output from Step 4

Hi @Thefloristwrapshop I did e-commerce for more than 10 years and understand this painpoint. Troy’s suggested flow is one way to go about it.

I think it would help if you share a bit more about how your existing excel or gsheet is structured as every merchant has their own workflows. Do you list out the inventory by item and by channel in each column? Do you want a direct update of the inventory amount or do you want the cell to show the “deducted” inventory amount and do the calculation in the sheet? 

Hi @Thefloristwrapshop ,
 
We just wanted to see how everything is going with your Zap. Did everyone’s recommendation get the job done? Feel free to reach out if you need further assistance with your Zap. We're glad to address any concerns and assist you.
 
We're looking forward to your response.